Iiyiprqvement in qarpet-sewing machines



I. HESSE. CARPET SEWING-MACHINES.

Not -1"e.5.;;g:z,7 Patented Sept.18, 1877.

ATTORNEYS.

' NPETERS, FHOTO-LITHOGRAFHER, WASNXNG'YOK. D C- UNITED;- STATES PATENTOFFICE.

Jos nrn nfnssn, on'sA n FRANCISCO, CALIFORNIA.

'lfmi n'ovlzmznr IN'FQARPET-SEWING ApHmEs.

Specification forming part of Letters Patent No. 195,277, datedSeptember 18, 1877; application filed May 21, 1877.

To all whom itmay ooncern;

. represents an end. elevation of my improved carpet-sewingmachine; Fig.2, a side elevation; Fig. 3, a top view; and Fig. 4,1a horizontalsection .of thesame on line gem, Fig. 1. Fig. 5 is adetailhorizontalsection o-t'the cam device for operating'the'feed. v

Similar letters of reference indicate correspondin g parts.,.

The object of this inventionisto furnish an effective. and,readily-operated hand sewingmachine, by whichcarpets may be rapidly andevenlyconuectedby a loop-stitch formed of onethread. s

The invention consists of a bent main plate or saddle, straddling theedges of the carpet, and having a regulating-plate, to control thedistance of the stitch from the edges and compress them for the needle.A presser-spring, with litter and feed-roller, is attached to the insideof the main plate. The feed-bar, needle-bar, and devices for impartingmotion to the reciprocating hook, receive their motion from a handcrank-wheel and driving-shaft geared therewith, the feed-bar operatingtwo feed pawls and rollers, working independently -of each other. Thecompound motion of the thread-hook is imparted by a top plate with guidegrooves and the beveled upper end of the hook-stem, in connection withpins and a bevel-plate of the connecting-rod of needle-bar anddriving-shaft, as will be more fully described.

By referring to the drawing, A represents the bent main plate or saddle,which is made of inverted U shape,*so as to straddle and rest upon theedges of the carpet. The two sides of the main plate are extendeddownward, being shorter or longer on either or both sides, or of equallength, as desired, forming guides for the machine.

To one side plate is attached a fixed shaft, B, with the driving handcrank-wheel G D, which gears by bevel-gearing E F with the uprightdriving-shaft G, that transmits motion to the difl'erent operating partsof the machine.

To the opposite side plate is attached the supporting arm or standard A,which carries the needle-bar guide-frame, and is provided with a rigidhandle, A that is held in the left hand, for the purpose of steadyingthe machine, while the hand crank-wheel is revolved by the right hand.

The carpet is suspended by means of hooks or clamps, and stretched outtightly with pillleys, similar to the method adopted for hand sewing.

The machine is placed on the carpet by withdrawing the presser-spring Hby the lifter .H' and then letting the same go, when the .machine is inposition. The main plate is thereby pressed tightly against the carpetand is ready to be operated.

The presserspring H carries, in lugs or plates at right angles thereto,one of the feedrollers a, the other feed-roller a revolving on fixedbearings of the opposite side plate, and

extending, like the first, through slots of the main plate to the insideof the same, bearing agaihst the carpet.

The main plate A is provided at the bent portion with aregulating-plate, b, by which the distance of the stitch from the edgeof the carpet is adjusted. The regulating-plate b is set by a smallscrew, 1), on top of the main plate. The plate I) is provided with adownwardly-projecting point, I), that is placed in front of the needle,for the purpose of pressing in any portion of the right'zside of thecarpet which may protrude.

The regulating-plate is contracted at that part immediately in front ofthe projecting point or horn, so as to compress the outside edges of thecarpet and confine those parts pushed in by the point. Theregulatingplate is recessed at thesides for thegpassage of the needle.

The feed-rollers a a, are operated by a feedbar, L, that turns in ahorizontal tubular portion of the needle-bar guide-frame I. The feed-barL is provided with two arms, that carry the pivoted and spring-actedfeed-pawls L, which engage pins or teeth at the under side of thefeed-rollers a a. The feed-pawls L act independently of each other, sothat eithenof' them may be disengaged from the feed rollers and retainedby means of a spring, a, in order to match the pattern of the carpet.

The forward motion of the feed is obtained by a fixed cam or projection,f, of the actuating-shaft G, engaging an upward-extended arm of thefeed-bar L, the arm having airincliued or beveled lug, f, as shownclearly in detail in Fig. 5. The return motion of the feed-bar isobtained by a spring. f attached to the horizontal portion of thefeed-bar.

The feed is regulated by means of a screw, f working in the standard Aand engaging a heel, f, of the feed-bar, as shown in Fig. 4, so that byshortening the screw the stitch will be smaller, and by lengthening thesame longer.

The needle-bar guide-frame l is arranged in horizontal position onstandard A, and at right angles to the main plate, the needle-bar Ibeing extended downward, and provided at the lower end with a hole,wherein the needle is fixed by means of a set-screw. The needlebar isreciprocated by a top crank of the driving-shaft G and a connecting-rod,G, attached to the rear end oi the needle-bar, being also provided withthe customary spool-sup porter, tension device, and thread-guiding hookand eye, which move with the needle-bar, as shown.

The rotating hook M is arranged at the side of the main plate oppositeto the needle, and attached to the lower end of a vertical rod, g, thatslides and turns in a guide-tube, g, of the needle-bar guide-frame 1.

To theitop of the vertical rod 9 is secured a horizontal plate, 9, whichcontains two curved grooves, in which the pins g attached to theconnecting-rod G slide, imparting thereby. intermittent rotaryreciprocating motion to the hook M. The top plate g is guided by a pin,h, along aslotted guide-bar, h,= --o f the needle-bar guide-framei'fandwpassedi up alon g a raised portion, h, of the same, so as to liftthe hook when the thread is passed through the carpet. The hook islowered prior to its return motion by a spiralspring between theguide-tube and its lowerarm, which motion is rendered positive by apitch or bevel at the upper end of the rod g,-fo13ming contact with afixed beveled stud, l, of the connecting-rod G, as shown in Fig. 2, soas to force the hookstem down.

The machine forms a simple loop-stitch, and sews the edges of the carpetin rapid and uniform manner, so as to accelerate and facilitate thetedious work of sewing carpets in ahigh degree.

Having th ns-descri bed myinvention, I claimshaft'G and regulating 'setscrew f, to feed mechanism and adjust length ofstitch, substantially asdescribed.

3. The combination of the reciprocating thread-hook M, havingspring-acted vertical rod or stem g, with the raisedportion h ofguide-bar h, and with the"projection or lug l of the driving-rod G toraise'aird'lower hook at the proper time, substantially in the mannerset forth.

J (DSEBH HESSE.

Witnesses ALBERT ARMSTED, CARL RAHSKOPFFL'

